Concrete might fly

Three players from completely different backgrounds have joined forces in the Concrete Chemicals project, planning the production of sustainable aviation fuel (SAF), which will concurrently contribute to the decarbonisation of the cement industry.

Global cement producer CEMEX, ecoFT, part of the integrated chemical company Sasol, and renewable energy company ENERTRAG are attempting to convert carbon from concrete production into SAF with the use of hydrogen, presenting an opportunity for carbon reduction in both sectors.

The SAF production uses a Power to Liquid (PTL) process, which relies on the supply of a sustainable carbon feedstock, such as unavoidable industrial carbon dioxide sources, and the production of green hydrogen through electrolysis using renewable energy. The carbon and hydrogen are converted to synthesis gas, a mixture of carbon monoxide and hydrogen, which is converted to longer chain hydrocarbons for the production of e-kerosene or SAF via the Fischer-Tropsch (FT) process.

ENERTRAG will produce green hydrogen exclusively with energy from regional wind and solar plants. CEMEX will capture the carbon generated during cement production, and Sasol ecoFT will contribute its innovative Fischer-Tropsch technology. The e-kerosene will be certified for use in aircraft, which includes its chemical properties such as composition and purity. Furthermore, the project partners intend that the e-kerosene will meet the EU RED II criteria and thus allow it to be accounted for in the greenhouse gas reduction quota and the mandatory minimum blending quota for PtL kerosene.

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